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Low-cost blood testing for the developing world may soon be possible with modified DVD players. Scientists in Stockholm at the KTH Royal Institute of Technology's School of Biotechnology have made a laser microscope out of a standard DVD player. The device can detect specific cells in blood samples and diagnose HIV and other conditions.

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Low-cost blood testing for the developing world may soon be possible with modified DVD players. Scientists in Stockholm at the KTH Royal Institute of Technology's School of Biotechnology have used a standard DVD player to make a laser-scanning microscope that can detect specific cells in blood samples and diagnose HIV and other conditions.